<!DOCTYPE html>
<html>
<head>
	<title></title>
</head>
<body>

</body>
<script type="text/javascript">

for (var i = 0; i < 11; i++) {
	for (var j = 0; j < 6; j++) {
		if(i*1+j*2==10){
			console.log("一台阶"+i+"个"+","+"二台阶"+j+"个"+"加等于10个台阶");
		}
	}
}



function foo(a){var a;return a;}
function bar(a){var a="bye";return a;}
console.log(foo("hellow"),bar("hellow"));

function aa(a,b,c,d){
	var a = 123;
	console.log(c);//nu
	c=7;
	console.log(b);//8
	var j;
	function a(){};
	var b = function(){};
	console.log(a);//
}
aa(7,8);
/*ao{
	a=nudefined/7/123
	b=nu/8
	c=nu/7
	d=nu/
	j=nu/


}
*/



</script>
</html>